3140691 has 4 divisors (see below), whose sum is σ = 4187592. Its totient is φ = 2093792.

The previous prime is 3140659. The next prime is 3140693. The reversal of 3140691 is 1960413.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3140691 - 2⁵ = 3140659 is a prime.

It is a D-number.

3140691 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3140693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 523446 + ... + 523451.

It is an arithmetic number, because the mean of its divisors is an integer number (1046898).

Almost surely, 2^3140691 is an apocalyptic number.

3140691 is a deficient number, since it is larger than the sum of its proper divisors (1046901).

3140691 is a wasteful number, since it uses less digits than its factorization.

3140691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046900.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 3140691 is about 1772.1994808712. The cubic root of 3140691 is about 146.4451758967.

The spelling of 3140691 in words is "three million, one hundred forty thousand, six hundred ninety-one".